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2 190 263

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IPC

(21) (22)

Application

99122111/06, 1999-10-22

(24)

Start date

1999-10-22

(22)

Actual filing date

1999-10-22

(45)

Published

2002-09-27

(72)

Inventor

Vasil'Chenko I.N.Demin E.D.Kobelev S.N.Ionov V.B.Rozhkov V.V.Enin A.A.Sinikov Ju.G.Pluzhnikov D.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Khimkontsentratov"Opytnoe Konstruktorskoe Bjuro

NUCLEAR REACTOR FUEL ASSEMBLY Russian patent published in 2002 - IPC

Abstract RU 2190263 C2

FIELD: water-cooled power reactors. SUBSTANCE: fuel assembly designed to generate heat energy and to convey it to coolant has bottom nozzle 1 mounting tube channels 2 passed through spacer grids 2. Fuel bundle 4 is placed in spacer grids. Can 5 is fitted around fuel bundle 4 and secured on bottom nozzle 1. Can 5 is free to vertically move relative to spacer grids 3. Top nozzle 6 is secured on top ends of tube channels 2 used as supporting members of fuel assembly. Top nozzle 6 is free to vertically move relative to can 5 and is provided with collar 7. Axial clearance 8 is provided between top nozzle 6 and inner surface of can 5. Flexible members 9 ensure tight engagement between can 5 and top nozzle 6 in coolant stream. EFFECT: enhanced mechanical stability of fuel assembly; reduced wall thickness of can. 2 cl, 2 dwg

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RU 2 190 263 C2

Authors

Vasil'Chenko I.N.

Demin E.D.

Kobelev S.N.

Ionov V.B.

Rozhkov V.V.

Enin A.A.

Sinikov Ju.G.

Pluzhnikov D.V.

Dates

2002-09-27—Published

1999-10-22—Filed